Home / 13,655.91-20,491.82-5,757.93

Finding the Fourth Proportional to 13,655.91, 20,491.82 and 5,757.93

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Solution

The fourth proportional to 13,655.91, 20,491.82 and 5,757.93 is: 8,640.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.91 : 20,491.82 = 5,757.93 : x
  2. Step 2: Convert to fraction form
    13,655.91/20,491.82 = 5,757.93/x
  3. Step 3: Cross multiply
    13,655.91x = 20,491.82 × 5,757.93
  4. Step 4: Simplify right side
    13,655.91x = 117,990,436.34
  5. Step 5: Solve for x
    x = 117,990,436.34/13,655.91
  6. Step 6: Final answer
    x = 8,640.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.